What time is 20:21?

Convert 20:21 to 12-hour AM/PM format



20:21 = 8:21 PM

20:21 on a 24-hour clock is is 8:21 PM on a 12-hour clock. This system is used throughout the world (not just the military) and leverages a 24-hour time clock rather than the 12-hour AM/PM system known to most English speaking countries. Below are ways to convert 20:21 through a time chart, automated converter, and how to convert the 24 hour clock into a 12-hour AM/PM system by hand.

24-hour format 12-hour format
20:21 8:21 PM

20:21 Time Conversion Chart

24 Hour Clock 12 Hour Clock (AM/PM) Military Time
20:21 20:21 2021
20:26 20:26 2026
20:31 20:31 2031
20:36 20:36 2036
20:41 20:41 2041
20:46 20:46 2046
20:51 20:51 2051
20:56 20:56 2056
21:01 21:01 2101
21:06 21:06 2106
21:11 21:11 2111
21:16 21:16 2116
21:21 21:21 2121
21:26 21:26 2126
21:31 21:31 2131
21:36 21:36 2136

How to convert 20:21 from 24-Hour Time to 12-Hour Standard Time

It is easy to convert from 24-hour time to 12-hour time once you know a few tricks. The primary difference between the two is that the hours in a 24 hour clock go all the way up to 23 (from 0 to 23). In a 12-hour clock, the hour resets to 1 after noon (midday). Follow the steps below to convert 20:21 to 12-hour time.

  1. First, determine whether or not 20 is greater than 12 (recall that this is one of the distinctions of the 12-hour clock, there are no hours "greater" than 12 on it)
  2. The hour 20 is higher than twelve, so we need to subtract 12 from 20 to get our "PM" hour: 20 - 12 = 8
  3. Now add "PM" to the end of the time: 8:21 PM